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Darwin Tree of Life Added Two Haplotype Genome Assemblies for Carrion Crow

Close-up portrait of a carrion crow
Research · Genetics & genomics

Darwin Tree of Life registered two new genome-assembly projects for carrion crow (Corvus corone) on 26 July 2026. The projects represent haplotype 1 and haplotype 2 of the bCorCoo1 assembly and are part of the Wellcome Sanger Institute’s wider genome resource for the species.

A diploid bird has two copies of each chromosome, one inherited from each parent. A haplotype-resolved assembly keeps these inherited sequence versions largely separate, preserving differences that can be blurred when a genome is reduced to a single consensus sequence.

The two assemblies are part of the broader bCorCoo resource, which also includes genomic and transcriptomic data used to support assembly and gene annotation.

This is primarily a new genomic reference resource rather than a study reporting a biological effect. The separate haplotype assemblies can provide a cleaner basis for future comparisons of genetic variation, genome structure and gene annotation in carrion crows and related crow lineages.

Sources and image credit

  1. Corvus corone (carrion crow) genome assembly, bCorCoo1 haplotype 1Primary BioProject record for bCorCoo1 haplotype 1, registered 26 July 2026 as a Darwin Tree of Life genome assembly project.
  2. Corvus corone (carrion crow) genome assembly, bCorCoo1 haplotype 2Primary BioProject record for bCorCoo1 haplotype 2, registered 26 July 2026 as the second Darwin Tree of Life haplotype assembly project.
  3. Corvus corone (carrion crow), bCorCooUmbrella BioProject linking the carrion crow genomic and transcriptomic data project with the two haplotype assembly projects.

Image: Carrion crow (Corvus corone) photographed in Gennevilliers, France, 11 January 2022. Photo: Alexis Lours / Wikimedia Commons. CC BY 4.0; Wikimedia Featured Picture and Quality Image. Representative species image; not the individual used for the Darwin Tree of Life genome resource. · CC BY 4.0 · Source

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Genetics & genomics

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